Improvement in superheaters



T. B. FIELD.

Super-Heaters. 150,155,865I Patntdncma, 1374.

INVENTOR WITNBSSES Attorneys NITED STATES PATENT (DFFIcEo THOMAS B. FIELD, OF CORNING, NEW YORK.

Specification forming part of Letters Patent No. 155,865, dated October 13, 1.874; application filed lIuly 25, 1874.

To all whom it may concern:

Beit known that I, THOMAS B. FIELD, of Corning, in the county of Steuben and State of New York, have invented a new and valuable Improvement in Superheater; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this speciiication, and to the letters and figures of reference marked thereon.

Figure l of the drawing is a representation of a sectional view of my steam-superheater.

This invention relates to apparatus which are designed for generating steam and superheating the same for the purpose of driving engines, heating buildings, drying wood, and for other purposes. It consists in the combination, with the coil of a heater, of a supplemental pipe leading into the steam-space of a boiler, as hereinafter more fully described.

In the annexed drawings, A designates a cylindrical shell, which may be mounted 011 a rectangular base, B, and constructed with a door, a', for the supply of fuel. C designates a coil of pipe, which is arranged inside of the shell A above a damper, D, and sustained in position by resting on the vertical walls of the said shell at the point where the upper and lower ends of the coil pass through it, or by means of brace-rods and ties connecting the coil with the said walls. (Not shown in the drawings.) The damper D, which is composed of a fixed perforated plate, b, and a circnlarly-movable plate, b', is designed to protect the coil C from undue heat ofthe re below, and at the same time allow the application of the heat to be regulated.

The damper, as arranged, serves as a shield to prevent the coil O from rapidly burning out.

One end of the coil-the lower endis adapted for being connected to the exhaustpipe of a steamengine, and also, by means of a supplemental pipe, E, having a cock, c, applied toit, with the steam-space of a steamboiler.

The supplemental pipe E, above mentioned, may be used when the engine is not in motion, and when, in consequence, no waste steam will be discharged from the exhaust-pipe into the coil C.

By this means I have-provided a means whereby the temperature of a drying-room or ofthe offices may be kept up, when, from any cause, the engine may be required to stop.

The upper end of the coil C communicates with a drum, G, on top of the shell A, by means of a goose-neck, d, which drum has an outlet, e, for steam, and a centrally-arranged Hue, g, for the escape ot' the products of combustion from the shell A.

When this apparatus is used for superhcating exhaust or spent steam, and also steam directly from the steam-space of a boiler, the dome or drum G may be omitted, and the su-- perheated steam taken directly from the coil to an engine, or steam radiators for warming or drying purposes.

When the apparatus is used as a Vsteamboiler or generator, itis provided with the drum G, as described, and also with a safetyvalve, a pump, and with steam and water gages, such as are usually employed for wellA known steam-boilers.

What I claim as new, and desire to secure by Letters Patent, is

The combination, with the coil O, arranged inside of the sheet A, of the supplemental pipe E, leading into the steam-space of a boiler, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

THOMAS B. FIELD. Wfitnesses:

D. F. BROWN, F. SCOTT D E WOLF. 

